%% dx = (0.0625,0.0625)
solution = [
-2.93099e-14 -3.31473e-15 2.98005e-13 -1.36763e-13 8.45776e-14 9.49296e-15 -1.05479e-14 -2.67012e-14 4.0007e-13 -4.4411e-14 4.38754e-14 6.42087e-14 -6.41211e-14 6.74342e-14 -1.62502e-14 5.15886e-15 1.19601e-13 
0.738508 0.614047 0.282615 -0.144076 -0.522204 -0.724317 -0.682292 -0.410293 1.42555e-13 0.410293 0.682292 0.724317 0.522204 0.144076 -0.282615 -0.614047 -0.738508 
1.04441 0.868393 0.399677 -0.203754 -0.738508 -1.02434 -0.964907 -0.580242 7.4143e-14 0.580242 0.964907 1.02434 0.738508 0.203754 -0.399677 -0.868393 -1.04441 
0.738508 0.614047 0.282615 -0.144076 -0.522204 -0.724317 -0.682292 -0.410293 5.15203e-14 0.410293 0.682292 0.724317 0.522204 0.144076 -0.282615 -0.614047 -0.738508 
1.70399e-14 2.25276e-14 2.68622e-14 2.83719e-14 2.99329e-14 3.23634e-14 3.59856e-14 3.9345e-14 4.19244e-14 3.98325e-14 3.59697e-14 3.20207e-14 2.87703e-14 2.67609e-14 2.54869e-14 2.45974e-14 2.42138e-14 
-0.738508 -0.614047 -0.282615 0.144076 0.522204 0.724317 0.682292 0.410293 3.67518e-14 -0.410293 -0.682292 -0.724317 -0.522204 -0.144076 0.282615 0.614047 0.738508 
-1.04441 -0.868393 -0.399677 0.203754 0.738508 1.02434 0.964907 0.580242 3.35447e-14 -0.580242 -0.964907 -1.02434 -0.738508 -0.203754 0.399677 0.868393 1.04441 
-0.738508 -0.614047 -0.282615 0.144076 0.522204 0.724317 0.682292 0.410293 3.11417e-14 -0.410293 -0.682292 -0.724317 -0.522204 -0.144076 0.282615 0.614047 0.738508 
2.32632e-14 2.39146e-14 2.50943e-14 2.62924e-14 2.73429e-14 2.82476e-14 2.86802e-14 2.92719e-14 2.93509e-14 2.87654e-14 2.81428e-14 2.77254e-14 2.66071e-14 2.56474e-14 2.47766e-14 2.41612e-14 2.42195e-14 
0.738508 0.614047 0.282615 -0.144076 -0.522204 -0.724317 -0.682292 -0.410293 2.81687e-14 0.410293 0.682292 0.724317 0.522204 0.144076 -0.282615 -0.614047 -0.738508 
1.04441 0.868393 0.399677 -0.203754 -0.738508 -1.02434 -0.964907 -0.580242 2.7716e-14 0.580242 0.964907 1.02434 0.738508 0.203754 -0.399677 -0.868393 -1.04441 
0.738508 0.614047 0.282615 -0.144076 -0.522204 -0.724317 -0.682292 -0.410293 2.80111e-14 0.410293 0.682292 0.724317 0.522204 0.144076 -0.282615 -0.614047 -0.738508 
2.37987e-14 2.55655e-14 2.70903e-14 2.73773e-14 2.74531e-14 2.78126e-14 2.82453e-14 2.95299e-14 2.9797e-14 2.6095e-14 2.2803e-14 2.15826e-14 2.27985e-14 2.35809e-14 2.36191e-14 2.31795e-14 2.2469e-14 
-0.738508 -0.614047 -0.282615 0.144076 0.522204 0.724317 0.682292 0.410293 3.52527e-14 -0.410293 -0.682292 -0.724317 -0.522204 -0.144076 0.282615 0.614047 0.738508 
-1.04441 -0.868393 -0.399677 0.203754 0.738508 1.02434 0.964907 0.580242 5.3141e-14 -0.580242 -0.964907 -1.02434 -0.738508 -0.203754 0.399677 0.868393 1.04441 
-0.738508 -0.614047 -0.282615 0.144076 0.522204 0.724317 0.682292 0.410293 1.19127e-13 -0.410293 -0.682292 -0.724317 -0.522204 -0.144076 0.282615 0.614047 0.738508 
-1.87457e-15 -4.06953e-15 1.47363e-13 -2.71591e-14 1.13766e-14 9.29373e-14 -3.90068e-14 -7.04469e-14 3.8934e-13 -8.68129e-14 -3.79923e-14 -2.10241e-13 1.78186e-13 5.61246e-14 3.00896e-15 2.83431e-14 4.89859e-16 
];
exact = [
0 0 0 -0 -0 -0 -0 -0 -0 0 0 0 0 0 -0 -0 -0 
0.707107 0.587938 0.270598 -0.13795 -0.5 -0.69352 -0.653281 -0.392847 -1.29893e-16 0.392847 0.653281 0.69352 0.5 0.13795 -0.270598 -0.587938 -0.707107 
1 0.83147 0.382683 -0.19509 -0.707107 -0.980785 -0.92388 -0.55557 -1.83697e-16 0.55557 0.92388 0.980785 0.707107 0.19509 -0.382683 -0.83147 -1 
0.707107 0.587938 0.270598 -0.13795 -0.5 -0.69352 -0.653281 -0.392847 -1.29893e-16 0.392847 0.653281 0.69352 0.5 0.13795 -0.270598 -0.587938 -0.707107 
1.22465e-16 1.01826e-16 4.68652e-17 -2.38917e-17 -8.65956e-17 -1.20112e-16 -1.13143e-16 -6.80377e-17 -2.24964e-32 6.80377e-17 1.13143e-16 1.20112e-16 8.65956e-17 2.38917e-17 -4.68652e-17 -1.01826e-16 -1.22465e-16 
-0.707107 -0.587938 -0.270598 0.13795 0.5 0.69352 0.653281 0.392847 1.29893e-16 -0.392847 -0.653281 -0.69352 -0.5 -0.13795 0.270598 0.587938 0.707107 
-1 -0.83147 -0.382683 0.19509 0.707107 0.980785 0.92388 0.55557 1.83697e-16 -0.55557 -0.92388 -0.980785 -0.707107 -0.19509 0.382683 0.83147 1 
-0.707107 -0.587938 -0.270598 0.13795 0.5 0.69352 0.653281 0.392847 1.29893e-16 -0.392847 -0.653281 -0.69352 -0.5 -0.13795 0.270598 0.587938 0.707107 
-2.44929e-16 -2.03651e-16 -9.37304e-17 4.77833e-17 1.73191e-16 2.40223e-16 2.26285e-16 1.36075e-16 4.49928e-32 -1.36075e-16 -2.26285e-16 -2.40223e-16 -1.73191e-16 -4.77833e-17 9.37304e-17 2.03651e-16 2.44929e-16 
0.707107 0.587938 0.270598 -0.13795 -0.5 -0.69352 -0.653281 -0.392847 -1.29893e-16 0.392847 0.653281 0.69352 0.5 0.13795 -0.270598 -0.587938 -0.707107 
1 0.83147 0.382683 -0.19509 -0.707107 -0.980785 -0.92388 -0.55557 -1.83697e-16 0.55557 0.92388 0.980785 0.707107 0.19509 -0.382683 -0.83147 -1 
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3.67394e-16 3.05477e-16 1.40596e-16 -7.1675e-17 -2.59787e-16 -3.60335e-16 -3.39428e-16 -2.04113e-16 -6.74892e-32 2.04113e-16 3.39428e-16 3.60335e-16 2.59787e-16 7.1675e-17 -1.40596e-16 -3.05477e-16 -3.67394e-16 
-0.707107 -0.587938 -0.270598 0.13795 0.5 0.69352 0.653281 0.392847 1.29893e-16 -0.392847 -0.653281 -0.69352 -0.5 -0.13795 0.270598 0.587938 0.707107 
-1 -0.83147 -0.382683 0.19509 0.707107 0.980785 0.92388 0.55557 1.83697e-16 -0.55557 -0.92388 -0.980785 -0.707107 -0.19509 0.382683 0.83147 1 
-0.707107 -0.587938 -0.270598 0.13795 0.5 0.69352 0.653281 0.392847 1.29893e-16 -0.392847 -0.653281 -0.69352 -0.5 -0.13795 0.270598 0.587938 0.707107 
-4.89859e-16 -4.07303e-16 -1.87461e-16 9.55667e-17 3.46382e-16 4.80446e-16 4.5257e-16 2.72151e-16 8.99856e-32 -2.72151e-16 -4.5257e-16 -4.80446e-16 -3.46382e-16 -9.55667e-17 1.87461e-16 4.07303e-16 4.89859e-16 
];
err = [
-2.93099e-14 -3.31473e-15 2.98005e-13 -1.36763e-13 8.45776e-14 9.49296e-15 -1.05479e-14 -2.67012e-14 4.0007e-13 -4.4411e-14 4.38754e-14 6.42087e-14 -6.41211e-14 6.74342e-14 -1.62502e-14 5.15886e-15 1.19601e-13 
0.0314008 0.0261089 0.0120166 -0.006126 -0.0222038 -0.0307975 -0.0290106 -0.0174454 1.42685e-13 0.0174454 0.0290106 0.0307975 0.0222038 0.006126 -0.0120166 -0.0261089 -0.0314008 
0.0444075 0.0369235 0.016994 -0.00866347 -0.0314008 -0.0435542 -0.0410272 -0.0246715 7.43267e-14 0.0246715 0.0410272 0.0435542 0.0314008 0.00866347 -0.016994 -0.0369235 -0.0444075 
0.0314008 0.0261089 0.0120166 -0.006126 -0.0222038 -0.0307975 -0.0290106 -0.0174454 5.16502e-14 0.0174454 0.0290106 0.0307975 0.0222038 0.006126 -0.0120166 -0.0261089 -0.0314008 
1.69175e-14 2.24258e-14 2.68153e-14 2.83957e-14 3.00195e-14 3.24836e-14 3.60987e-14 3.9413e-14 4.19244e-14 3.97645e-14 3.58566e-14 3.19006e-14 2.86837e-14 2.6737e-14 2.55337e-14 2.46992e-14 2.43363e-14 
-0.0314008 -0.0261089 -0.0120166 0.006126 0.0222038 0.0307975 0.0290106 0.0174454 3.66219e-14 -0.0174454 -0.0290106 -0.0307975 -0.0222038 -0.006126 0.0120166 0.0261089 0.0314008 
-0.0444075 -0.0369235 -0.016994 0.00866347 0.0314008 0.0435542 0.0410272 0.0246715 3.3361e-14 -0.0246715 -0.0410272 -0.0435542 -0.0314008 -0.00866347 0.016994 0.0369235 0.0444075 
-0.0314008 -0.0261089 -0.0120166 0.006126 0.0222038 0.0307975 0.0290106 0.0174454 3.10118e-14 -0.0174454 -0.0290106 -0.0307975 -0.0222038 -0.006126 0.0120166 0.0261089 0.0314008 
2.35081e-14 2.41183e-14 2.5188e-14 2.62446e-14 2.71697e-14 2.80073e-14 2.84539e-14 2.91358e-14 2.93509e-14 2.89014e-14 2.83691e-14 2.79657e-14 2.67803e-14 2.56951e-14 2.46828e-14 2.39575e-14 2.39746e-14 
0.0314008 0.0261089 0.0120166 -0.006126 -0.0222038 -0.0307975 -0.0290106 -0.0174454 2.82986e-14 0.0174454 0.0290106 0.0307975 0.0222038 0.006126 -0.0120166 -0.0261089 -0.0314008 
0.0444075 0.0369235 0.016994 -0.00866347 -0.0314008 -0.0435542 -0.0410272 -0.0246715 2.78997e-14 0.0246715 0.0410272 0.0435542 0.0314008 0.00866347 -0.016994 -0.0369235 -0.0444075 
0.0314008 0.0261089 0.0120166 -0.006126 -0.0222038 -0.0307975 -0.0290106 -0.0174454 2.8141e-14 0.0174454 0.0290106 0.0307975 0.0222038 0.006126 -0.0120166 -0.0261089 -0.0314008 
2.34313e-14 2.526e-14 2.69497e-14 2.74489e-14 2.77128e-14 2.81729e-14 2.85847e-14 2.9734e-14 2.9797e-14 2.58909e-14 2.24636e-14 2.12223e-14 2.25387e-14 2.35093e-14 2.37597e-14 2.3485e-14 2.28364e-14 
-0.0314008 -0.0261089 -0.0120166 0.006126 0.0222038 0.0307975 0.0290106 0.0174454 3.51228e-14 -0.0174454 -0.0290106 -0.0307975 -0.0222038 -0.006126 0.0120166 0.0261089 0.0314008 
-0.0444075 -0.0369235 -0.016994 0.00866347 0.0314008 0.0435542 0.0410272 0.0246715 5.29573e-14 -0.0246715 -0.0410272 -0.0435542 -0.0314008 -0.00866347 0.016994 0.0369235 0.0444075 
-0.0314008 -0.0261089 -0.0120166 0.006126 0.0222038 0.0307975 0.0290106 0.0174454 1.18997e-13 -0.0174454 -0.0290106 -0.0307975 -0.0222038 -0.006126 0.0120166 0.0261089 0.0314008 
-1.38471e-15 -3.66223e-15 1.47551e-13 -2.72547e-14 1.10302e-14 9.24569e-14 -3.94594e-14 -7.07191e-14 3.8934e-13 -8.65407e-14 -3.75397e-14 -2.09761e-13 1.78532e-13 5.62201e-14 2.8215e-15 2.79358e-14 0 
];
